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Finding the Fourth Proportional to 18,602.10, 25,670.45 and 10,643.82

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Solution

The fourth proportional to 18,602.10, 25,670.45 and 10,643.82 is: 14,688.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,602.10 : 25,670.45 = 10,643.82 : x
  2. Step 2: Convert to fraction form
    18,602.10/25,670.45 = 10,643.82/x
  3. Step 3: Cross multiply
    18,602.10x = 25,670.45 × 10,643.82
  4. Step 4: Simplify right side
    18,602.10x = 273,231,579.46
  5. Step 5: Solve for x
    x = 273,231,579.46/18,602.10
  6. Step 6: Final answer
    x = 14,688.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.